# US 12,004,255 B2 · Discontinuous reception techniques with non-uniform cycle durations > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,004,255 B2 - Document ID: US12004255B2 - Status: Granted - Kind: B2 - Application number: 17/942,491 - Filed: 2022-09-12 - Published: 2023-01-05 - Granted: 2024-06-04 - Earliest claimed: 2019-06-07 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Peter Pui Lok Ang; Linhai He; Prashanth Haridas Hande; Jay Kumar Sundararajan; Naga Bhushan; Tingfang Ji - Web page: https://patentgrep.com/patent/US12004255B2 ## CPC - H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX] - H04W 52/0232: {according to average transmission signal activity} - H04W 52/0258: {controlling an operation mode according to history or models of usage information, e.g. activity schedule or time of day} - H04W 80/02: Data link layer protocols - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract Methods, systems, and devices for wireless communications are described for configuring discontinuous reception (DRX) cycles within a DRX time period at a user equipment (UE). DRX configurations may provide that different DRX cycles have non-uniform cycle durations within the DRX time period. Such non-uniform cycle durations may provide DRX ON-durations that are aligned with a periodicity of downlink traffic to the UE in which the downlink traffic may be unaligned with timing boundaries used for wireless communications between the UE and a base station, such as slot boundaries or symbol boundaries. ## Claims ### Claim 1 An apparatus for wireless communication at a user equipment (UE), comprising: one or more processors, memory coupled with the one or more processors; and instructions stored in the memory and executable by the one or more processors to cause the apparatus to: receive an indication of a discontinuous reception cycle configuration comprising an indication of a plurality of discontinuous reception cycles within a discontinuous reception period, the plurality of discontinuous reception cycles determined based at least in part on a non-integer rational number; and initiate a wakeup procedure for the UE based at least in part on a start time for each ON-duration of the plurality of discontinuous reception cycles within the discontinuous reception period, wherein a timing boundary associated with the start time comprises a timing boundary nearest to the start time for each ON-duration of the plurality of discontinuous reception cycles based at least in part on the non-integer rational number, a timing boundary subsequent to the start time for each ON-duration of the plurality of discontinuous reception cycles based at least in part on the non-integer rational number, or a timing boundary preceding the start time for each ON-duration of the plurality of discontinuous reception cycles based at least in part on the non-integer rational number. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the timing boundary is a slot boundary or a symbol boundary. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the instructions are further executable by the one or more processors to cause the apparatus to: initiate a discontinuous reception cycle inactivity timer based at least in part on an absolute time relative to the start time for each ON-duration of the plurality of discontinuous reception cycles based at least in part on the non-integer rational number or the start time for each ON-duration of the plurality of discontinuous reception cycles to align with the timing boundary. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the instructions are further executable by the one or more processors to cause the apparatus to: receive the indication of the discontinuous reception cycle configuration via radio resource control signaling. ### Claim 5 (depends on 1) The apparatus of claim 1, wherein the instructions are further executable by the one or more processors to cause the apparatus to: receive the indication of the discontinuous reception cycle configuration via one or more of downlink control information or a medium access control (MAC) control element (CE). ### Claim 6 An apparatus for wireless communication at a network entity, comprising: one or more processors, memory coupled with the one or more processors; and instructions stored in the memory and executable by the one or more processors to cause the apparatus to: identify a traffic periodicity associated with wireless communications traffic to a user equipment (UE); and transmit, based at least in part on the traffic periodicity, an indication of a discontinuous reception cycle configuration comprising an indication of a plurality of discontinuous reception cycles within a discontinuous reception period, the plurality of discontinuous reception cycles determined based at least in part on a non-integer rational number, wherein the discontinuous reception cycle configuration comprises a wakeup procedure for the UE based at least in part on a start time for each ON-duration of the plurality of discontinuous reception cycles within the discontinuous reception period, and wherein a timing boundary associated with the start time comprises a timing boundary nearest to the start time for each ON-duration of the plurality of discontinuous reception cycles based at least in part on the non-integer rational number, a timing boundary subsequent to the start time for each ON-duration of the plurality of discontinuous reception cycles based at least in part on the non-integer rational number, or a timing boundary preceding the start time for each ON-duration of the plurality of discontinuous reception cycles based at least in part on the non-integer rational number. ### Claim 7 (depends on 6) The apparatus of claim 6, wherein the instructions are further executable by the one or more processors to cause the apparatus to: transmit the indication of the discontinuous reception cycle configuration via radio resource control signaling. ### Claim 8 (depends on 6) The apparatus of claim 6, wherein the instructions are further executable by the one or more processors to cause the apparatus to: transmit the indication of the discontinuous reception cycle configuration via one or more of downlink control information or a medium access control (MAC) control element (CE). ### Claim 9 A method for wireless communication at a user equipment (UE), comprising: receiving an indication of a discontinuous reception cycle configuration comprising an indication of a plurality of discontinuous reception cycles within a discontinuous reception period, the plurality of discontinuous reception cycles determined based at least in part on a non-integer rational number; and initiating a wakeup procedure for the UE based at least in part on a start time for each ON-duration of the plurality of discontinuous reception cycles within the discontinuous reception period, wherein a timing boundary associated with the start time comprises a timing boundary nearest to the start time for each ON-duration of the plurality of discontinuous reception cycles based at least in part on the non-integer rational number, a timing boundary subsequent to the start time for each ON-duration of the plurality of discontinuous reception cycles based at least in part on the non-integer rational number, or a timing boundary preceding the start time for each ON-duration of the plurality of discontinuous reception cycles based at least in part on the non-integer rational number. ### Claim 10 (depends on 9) The method of claim 9, wherein the timing boundary is a slot boundary or a symbol boundary. ### Claim 11 (depends on 9) The method of claim 9, further comprising: initiating a discontinuous reception cycle inactivity timer based at least in part on an absolute time relative to the start time for each ON-duration of the plurality of discontinuous reception cycles based at least in part on the non-integer rational number or the start time for each ON-duration of the plurality of discontinuous reception cycles to align with the timing boundary. ### Claim 12 (depends on 9) The method of claim 9, further comprising: receiving the indication of the discontinuous reception cycle configuration via radio resource control signaling. ### Claim 13 (depends on 9) The method of claim 9, receiving the indication of the discontinuous reception cycle configuration via one or more of downlink control information or a medium access control (MAC) control element (CE). ### Claim 14 A method for wireless communication at a network entity, comprising: identifying a traffic periodicity associated with wireless communications traffic to a user equipment (UE); and transmitting, based at least in part on the traffic periodicity, an indication of a discontinuous reception cycle configuration comprising an indication of a plurality of discontinuous reception cycles within a discontinuous reception period, the plurality of discontinuous reception cycles determined based at least in part on a non-integer rational number, wherein the discontinuous reception cycle configuration comprises a wakeup procedure for the UE based at least in part on a start time for each ON-duration of the plurality of discontinuous reception cycles within the discontinuous reception period, and wherein a timing boundary associated with the start time comprises a timing boundary nearest to the start time for each ON-duration of the plurality of discontinuous reception cycles based at least in part on the non-integer rational number, a timing boundary subsequent to the start time for each ON-duration of the plurality of discontinuous reception cycles based at least in part on the non-integer rational number, or a timing boundary preceding the start time for each ON-duration of the plurality of discontinuous reception cycles based at least in part on the non-integer rational number. ### Claim 15 (depends on 14) The method of claim 14, further comprising: transmitting the indication of the discontinuous reception cycle configuration via radio resource control signaling. ### Claim 16 (depends on 14) The method of claim 14, further comprising: transmitting the indication of the discontinuous reception cycle configuration via one or more of downlink control information or a medium access control (MAC) control element (CE).